In Birds,sex Is Determined by a ZW Chromosome Scheme That

question 30

Multiple Choice

In birds,sex is determined by a ZW chromosome scheme that is much like the typical XY scheme seen in humans and many other organisms,except that the system is reversed:
Males are ZZ (similar to XX in humans) and females are ZW (similar to XY in humans) .A lethal recessive allele that causes death of the embryo occurs on the Z chromosome in pigeons.What would be the sex ratio in the offspring of a cross between a male heterozygous for the lethal allele and a normal female?

• A)1:1 male to female
• B)4:1 male to female
• C)3:1 male to female
• D)1:2 male to female
• E)2:1 male to female

Understand the principles of effective exercise and training strategies.

Recognize the importance of hydration and the role of sports drinks in intense workouts.

Identify strategies for increasing physical activity in everyday life.

Know the recommended guidelines for muscle fitness training frequency.

---

Definitions:

Nutritional Value

The content of essential nutrients in a food item, such as vitamins, minerals, and proteins, which contribute to its overall health benefits.

Social Experience

The interaction and communication between individuals in social environments, which can influence attitudes, perceptions, and behaviors.

Extra Servings

Refers to the provision of additional portions or servings of a product or service, often used in food-related contexts to indicate offering more than the standard amount.

Multichannel Marketing

A marketing strategy that integrates various communication channels, such as email, social media, and brick-and-mortar stores, to interact with customers.